US5162765A - Adjustable magnetic tripping device and circuit breaker including such device - Google Patents
Adjustable magnetic tripping device and circuit breaker including such device Download PDFInfo
- Publication number
- US5162765A US5162765A US07/814,972 US81497291A US5162765A US 5162765 A US5162765 A US 5162765A US 81497291 A US81497291 A US 81497291A US 5162765 A US5162765 A US 5162765A
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- United States
- Prior art keywords
- armature
- coil
- axis
- tripping
- bobbin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
Definitions
- the invention relates to the field of magnetic actuators, and in particular to magnetic tripping devices which are designed to respond to the magnitude of a voltage or current by operating if this magnitude exceeds a certain value.
- actuators of this type Rather than being designed to provide maximum force for a given size or electrical power input, actuators of this type have details of magnetic and physical construction selected to maximize the accuracy of tripping level--that is, there should be only a small variation between the current or voltage which may cause tripping, and the highest value for which tripping may not occur.
- An especially important use of magnetic tripping devices is to provide fast tripping of an electrical circuit breaker in response to a relatively large overcurrent condition, without tripping due to a brief overcurrent such as a motor starting current.
- the permissible inrush current may be three or more times the long-term overcurrent limit; but it is desirable that tripping occur rapidly in the event of a larger overload, to avoid damage to equipment obtaining current from the breaker.
- One well-known method of adjusting the actuating level (current or voltage) of a relay or solenoid is to adjust the spring forceholding the armature against a stop. To do this, either the remote end of the spring must be held by an adjustment device, or springs must be selected or trimmed.
- the former method is widely used for relays having a clapper which is attracted toward an electromagnet subassembly, and is usable with solenoids having an exterman spring.
- an internal spring is apt to be the designer's choice. Selecting or trimming springs then requires repeated disassembly and reassembly.
- a solenoid used to release a trip latch will make it easier to trip all poles quickly, and because only a small force is required to actuate the latch, a fast solenoid is easier to achieve in a compact construction.
- a hammer action is desirable, in which the solenoid directly pulls open a movable contact arm.
- Such a solenoid is designed to develop very high force when a short circuit current flows through the coil. Making such a solenoid also accurately and economically adjustable has not been possible to date.
- An object of the invention is to permit factory adjustment of the trip level of a magnetic tripping device without requiring extra spring-adjustment screws or brackets, and without requiring selection or trimming of springs.
- Another object of the invention is to provide an adjustable solenoid having an internal spring, whose trip level can be adjusted without disassembly.
- a magnetic tripping device has an adjustable armature stop rod which is used to define the static position of the armature with respect to the region where a concentrated magnetic field attracts (or repels) the armature.
- the stop rod has a portion which is arranged coaxially with the armature along its movement direction and is plastically deformable so that bending a portion which engages the device frame allows adjustment of the length between the main part of the armature and the point of engagement with the frame.
- the device is a solenoid having a hollow central zone into which a plunger armature is attracted.
- An actuating portion extends from the magnetically active main portion of the armature outward from the front of the coil portion of the solenoid.
- the armature stop rod extends through the zone and out through a rear central opening, and is bent to engage the solenoid structure at an end surface of the opening.
- the solenoid coil is wound on an insulating bobbin which has a front portion serving as a bearing for the armature, and a rear extension protruding from the magnetic frame.
- the stop rod adjustment portion passes through the rear extension and is bent over against the end surface of the bobbin extension.
- FIG. 1 is a simplified layout of the principal parts of a magnetic blow-out circuit breaker according to the invention
- FIG. 2 is a diagrammatic view of the contact and latch mechanism of the breaker of FIG. 1 in the closed position
- FIG. 3 is a view similar to FIG. 2 but with the mechanism at the trip point
- FIG. 4 is a view similar to FIG. 2 but with the mechanism latch at mid-travel
- FIG. 5 is a view similar to FIG. 2 but with inter-pole trip completed
- FIG. 6 is an oblique view of the trip link/interpole trip element at an enlarged scale
- FIG. 7 is a layout of the magnetic tripping solenoid of FIG. 1,
- FIG. 8 is diagrammatic view of the booster loop and arc cavity of the embodiment of FIG. 1, and
- FIG. 9 is a perspective view of the booster loop element at an enlarged scale.
- a multi-pole circuit breaker one pole of which is shown in FIG. 1, is contained and mounted in an insulating housing 2 having conventional external snap in mounting elements 4 and 6.
- the breaker includes a magnetic tripping solenoid 10 for tripping a trip link latch and multi-pole link mechanism 11 which incorporates a novel trip link element 12.
- the trip link 12 is tripped to open a contact set 13 upon sensing a relatively high overload current carried from the line terminal connection 15 through a bi-metal strip or element 14, the contact set 13, and the coil 16 of the solenoid 10, to a load terminal connection 17.
- the same contact set is opened as a result of movement of the bi-metal strip 14 if the breaker has been carrying a small overload current for a relatively long period of time.
- the bi-metal strip 14 has its cold position adjusted by a screw 24 which permits calibration of the long-term current trip setting.
- Current flowing through the bi-metal strip is carried by a multi-strand flexible wire strap 26 to the fixed contact 27.
- Current from a movable contact 28 on the contact arm 18 is carried over multi-strand flexible strap 29 to one end 31 of the solenoid coil 16.
- the other end of the solenoid coil 16 is connected by a relatively rigid conductor 33 to the load terminal connection 17.
- a handle 34 connected to a handle link 35 is used to open, close, and reset the movable contact 18 via the mechanism 11.
- the mechanism 11 and its parts are shown in FIGS. 2-6.
- the movable contact arm 18 is pivotably mounted on a latch and contact pivot pin 36 which is fixed in a crank 38 which, in turn, is pivotable mounted on a mechanism pivot pin 40 fixed to the frame 2 of the breaker.
- the pivot pin 36 also supports a pivotable latch 42 to which the handle link 35 is connected.
- the trip link 12 shown in detail in FIG. 6, is the major interconnecting element between the momentary overload magnetic trip solenoid 10, the long-term overload bi-metal strip 14, and latching parts of each of the poles of the breaker.
- the following description treats the link 12 shown as though it is part of the middle pole mechanism of a 3-pole breaker, the three poles and their mechanisms being substantially identical.
- the trip link may be operated to unlatch the parts for the movable contact arm 18 of this pole in any of three ways: striking of a finger 52 by an actuating disc 54 of the solenoid 10 of this pole; pushing of a finger 56 by the end of the bi-metal strip 14 of this pole; or contact of one of the inter-pole actuating surfaces 58 and 60 by a trip link (not shown) of an adjacent pole of the same breaker. If this trip link is pivoted as a result of any of those occurrences, after unlatching the movable contact 18 of this pole it will operate either or both of the adjacent poles, in sequence, such that all poles are tripped, via contact of the surface 62 (shown in FIG. 1) or the surface 64 (obscured in FIG. 6) which faces surface 60 with respective corresponding surfaces 58 or 60 of the adjoining pole units.
- the trip link 12 is preferably molded as one piece of a reinforced synthetic resin material having excellent insulating properties, such as 15% polyester glass having short fibers. This is the only part extending between adjacent poles, so that such construction increases the high voltage isolation between the breaker pole assemblies.
- the link 12 has a center hub 65 surrounding a pivot mounting hole 66 which defines a pivot axis 67, for mounting over the mechanism pivot pin 40.
- a relatively long sensing arm 68 extends generally radially from the hub 65, and terminates in the fingers 52 and 56. These fingers are preferably offset from each other both angularly and axially, so that the actuating disc 54 and the bi-metal element 14 may be arranged to have non-overlapping paths of movement.
- An adjoining-pole operating projection 69 on which the surfaces 58 and 62 are formed, extends axially in one direction from the hub, at an average radius distance from the axis 67 much less than the length of the sensing arm 68; and at the opposite end of the hub two operating projections 70 and 71 extend axially, separated by a space substantially wider angularly than the angular width of the projection 69, the facing surfaces 60 and 64 being formed on the respective projections 70 and 71.
- a latching surface 73 is formed near the root of the sensing arm 68, the surface 73 being generally circularly cylindrical about the axis 67.
- the trip link 12 is proportioned such that its center of gravity 74 falls near the axis 67, generally in line axially with the fingers 52 and 56.
- crank 38 and trip link 12 are pivoted, axially adjoining each other, on the mechanism pivot pin 40.
- a latch and contact pivot pin 36 interconnects the contact arm 18, crank 38 and latch 42, the pin 36 being fixed optionally to one of these elements, and pivotally journalled in the other two.
- the latch 42 has a latching projection 76 extending radially with respect to the pivot 36, which in the closed contact position shown in FIG. 2 presses against the latching surface 73 of the trip link 12 to form a secondary latch.
- the latch 42 and the crank 38 are U-shaped metal stampings as viewed from their respective pivots, with the open end of each "U" facing away from the handle 34.
- the sensing arm 68 of the trip link 12 is aligned so it can pass between the legs of the latch 42, and the contact arm 18 is arranged between the legs of the crank 38.
- a mechanism spring 78 is stretched between a pin 79 fixed to the housing 2 and an opening 80 in the crank 38 (shown in FIG. 5) to pull the crank in a direction toward the solenoid 10.
- a contact pressure spring 82 extending from the mechanism pivot pin 40, bears against a side edge 83 of the contact arm 18, urging the contact arm in a clockwise direction about the pivot pin 36 to provide proper pressure between the movable contact 28 and the fixed contact 27.
- the spring 82 bears against an end edge 84 of the contact arm 18, tending to urge the arm 18 counterclockwise so as to hold the contacts open.
- a trip link spring urges the trip link 12 in a clockwise direction about the pin 40 at all times.
- the solenoid 10 is a subassembly having five principal parts: a coil 16, an insulating bobbin 90, a soft magnetic steel frame 91, an armature 92, and a spring 93.
- the bobbin is hollow, to provide room for the armature 92 and spring 93, and has two coaxial end extensions 94 and 95.
- the front extension 94 fits within an opening 96 in the frame 91. This opening concentrates the magnetic field in the region within and adjacent to the opening, while the plastic material of the bobbin extension forms a bearing journal for the largest diameter part 97 of the main portion of the armature 92 which extends through the opening 96.
- the coil 16 and armature 92 can therefore be completely insulated from each other and the solenoid frame 2.
- An armature extension 98 extends axially away from the large diameter part 97 to the actuating disc 54.
- a stop rod 99 passes through the extension 95, preferably with a loose fit.
- An end portion 100 of the stop rod is bent sharply at least obliquely, and preferably about 90° away from the armature and bobbin axis, to bear against the outer end 101 of the extension 95.
- the compression spring 93 is captured between the largest diameter part 97 of the armature and the rear end of the bobbin adjacent the extension 95.
- At least the stop rod portion of the armature is made from a plastically deformable material, so that the bend between the end portion 100 can be formed at a location along the stop rod selected to control the static position of the large diameter portions of the armature with respect to the opening 96 in the frame 2.
- the length of the stop rod between the bend and the armature main portion therefore determines the magnitude of current required to overcome the force of the spring 93, so that the momentary current trip level can be adjusted accurately after the solenoid has been assembled, without need for selecting and trimming springs.
- FIG. 8 The configuration and current flow patterns of the arc blow-out parts of the breaker are shown in FIG. 8, while the rigid conducting element forming the booster loop and arc runner 20 is shown magnified in FIG. 9.
- the rigid booster loop and arc runner 20 is stamped and bent from one piece of hard copper, folded over so that one end 124 fits between the arc chute 19 and the rear wall of the breaker housing 2, the end 124 being adjacent the rear (in the direction of arc blow-out) end of the chute 19.
- the other end 126 of the booster loop portion 21 is bent for convenience to attach directly to the line terminal connection 15. Except for the bent end 126, the booster loop 21, including the region of it adjacent the end 124, is parallel to the arc runner 22. This not only permits a very compact construction but, as described below, provides a performance advantage because the arc is accelerated faster into the arc chute.
- the other end 128 of the arc runner 22 is fixed adjacent, but insulated from, the fixed contact 27.
- the contacts, solenoid and arc runner are arranged such that, immediately after the contacts are separated, the fixed-contact end of the arc between the contacts transfers to the arc runner and, as will be described below, moves down the runner until the arc is extinguished.
- Tripping operation initiated by this pole is as follows: starting from the position shown in FIG. 2, either finger 52 or 60 is contacted by the relevant trip unit, pivoting the trip link 12 counterclockwise as seen in FIGS. 1-5.
- the latching surface 64 has slipped past the latching projection 76 of the latch 42, the latch begins to pivot counterclockwise about the handle link 35 as the crank is accelerated counterclockwise about the mechanism pivot pin 40 as a result of the force applied by the mechanism spring 78 to the crank 38.
- the solenoid force produced will be above that which is just sufficient to overcome the solenoid spring 93; and in preferred configurations and ratings of the breaker, far above the minimum for magnetic tripping. This causes the armature 92 of the solenoid to develop a very high saturation force, and to accelerate to speeds exceeding those equivalent to the crank and contact speeds occurring as described above.
- a special advantage of the contact arm, crank and pressure spring arrangement disclosed is that, under fast tripping, the rotation of the contact arm 18 causes the spring end 85 to slip onto the end edge 84 of the arm, reversing the torque so that the movable contact 28 is held away from the fixed contact 27 until the crank 38 and the rest of the operating mechanism have time to reach the final open position, ready for resetting.
- the final position leaves the handle in the open position, fully counterclockwise; the remote end of the contact arm 18 pressing against the corner 104 of the solenoid frame, with the nose 140 at the other end of the arm 18 pressing against the surface 142, and the latching projection 76 adjacent the latching surface 73.
- Closing movement of the handle 34 causes the handle link 35 to push the latching projection 76 up against the latching surface 73, and then to pivot the latch 42 clockwise about the point of latching engagement, thereby pivoting the latch and contact pivot pin 36, and with it, the crank 38, clockwise about the mechanism pivot pin 40.
- the nose 140 of the contact arm 18 is released from engagement with the inside surface 142 when the movable contact 28 engages the fixed contact 27, and normal contact pressure due to the contact pressure spring 82 is applied.
- the solenoid embodiment disclosed herein is just one of many which can utilize this invention aspect.
- the solenoid 10 is a subassembly of a type suitable for use in other mechanisms besides circuit breakers.
- the magnetic trip level or current sensitivity (for non-breaker applications) can be easily and accurately set after the device is assembled.
- One technique which may be used is to apply a current to the coil 16 equal to the desired trip level prior to bending the stop rod 99.
- the position of the armature can be controlled to move it to the position where the magnetic pull just equaly the force of the spring 93. While holding the armature 92 in that position, the end 100 of the stop rod is bent over in contact with the end 101 of the bobbin extension 95, establishing the setting through plastic deformation of the stop rod.
- FIG. 8 shows three stages of current flow through the breaker: contact set 13 closed, contacts opened but arc not yet accelerated toward the arc chute 19, and arc transferred from the fixed contact 27 to the arc runner 22 and partially blown toward the arc chute.
- the magnetic field generated around and in the region 152 causes a force urging the arc outward--that is, toward the space 154.
- the arc stretches downward as viewed in FIG. 8, and transfers from the fixed contact 27 to the arc runner 22.
- This causes the current to follow a new path: from the line terminal connection 15 directly to the booster loop end 126, along the booster loop 21 portion to the end 124 adjacent the rear of the arc chute 19, and then back up, in the opposite direction, along the arc runner 22 to the location of instantaneous termination of the arc path 156; and across the space between the runner and the movable contact arm 18.
- the curved end of the movable contact arm 18 is selected to cause the arc hot spot to travel from the point of normal conductive contact with the fixed contact 27, moving continuously toward the extreme end until the arc breaks spontaneously (relatively low currents) or is blown into the arc chute 19 and interrupted.
- the connections and configuration of the arc runner and booster loop element 20 provide significant performance advantages over prior known circuit breakers: First, as the arc termination travels along the runner, the impedance drops. As a result the force accelerating the arc toward the arc chute increases, and the arc is extinguished faster than with prior art breakers. Second, the overcurrent is quickly diverted from the path through the bi-metal strip 14, so that the calibration of this strip is more consistent.
- the adjustment feature of the solenoid mechanism disclosed herein could also be utilized in a magnetic device such as a relay, having a clapper rather than a central core armature.
- a magnetic device such as a relay, having a clapper rather than a central core armature.
- Use of the adjustable central stop rod allows adjustment without exchanging springs and without having unbalanced lateral forces which cause irregular friction, and thus inconsistent calibration.
- the various elements of the latch and trip mechanism can be utilized independent of each other.
- the trip link can be used in a single pole breaker, with the axial projections operation a different function.
- the crank and contact pressure spring arrangement provide important performance advantages independent of the trip link, because the contact pressure spring also aids in opening the contacts and holding them open during fast magnetic tripping.
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Abstract
Description
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US07/814,972 US5162765A (en) | 1991-12-23 | 1991-12-23 | Adjustable magnetic tripping device and circuit breaker including such device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/814,972 US5162765A (en) | 1991-12-23 | 1991-12-23 | Adjustable magnetic tripping device and circuit breaker including such device |
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Publication Number | Publication Date |
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US5162765A true US5162765A (en) | 1992-11-10 |
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ID=25216504
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US07/814,972 Expired - Fee Related US5162765A (en) | 1991-12-23 | 1991-12-23 | Adjustable magnetic tripping device and circuit breaker including such device |
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US (1) | US5162765A (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5444424A (en) * | 1993-10-27 | 1995-08-22 | Square D Company | Circuit breaker trip solenoid having over-travel mechanism |
EP0668602A1 (en) * | 1994-02-16 | 1995-08-23 | Eva Munoz Omella | Adjustable current-limiting release for electrotechnic devices |
US5565828A (en) * | 1994-03-01 | 1996-10-15 | Heinrich Kopp Ag | Circuit breaker |
US5886605A (en) * | 1998-05-07 | 1999-03-23 | Eaton Corporation | Actuator assembly with calibration means and electrical power switch apparatus incorporating the actuator assembly with calibration means |
US6034586A (en) * | 1998-10-21 | 2000-03-07 | Airpax Corporation, Llc | Parallel contact circuit breaker |
US6262643B1 (en) * | 1999-02-01 | 2001-07-17 | Entrelec S.A. | Mechanism for controlling an electrical circuit breaker |
US6441709B2 (en) * | 1998-07-30 | 2002-08-27 | Siemens Aktiengesellschaft | Device for short-circuit protection |
DE10120677A1 (en) * | 2001-04-27 | 2002-11-14 | Siemens Ag | Modular series switch unit has switching module with holder for coupling element for clamping switch mechanism, contact elements, connection arrangement in form of contact module |
US6853274B2 (en) | 2001-06-20 | 2005-02-08 | Airpax Corporation, Llc | Circuit breaker |
WO2006015030A1 (en) * | 2004-07-27 | 2006-02-09 | Siemens Energy & Automation, Inc. | Enhanced solenoid-armature interface |
US20060164195A1 (en) * | 2005-01-25 | 2006-07-27 | Chung Rong-Lin G | Breaker for protecting electric facilities |
EP1826794A1 (en) * | 2006-02-24 | 2007-08-29 | ABB France | Device for protecting against overvoltage with solder-free contacts and corresponding manufacturing method |
US20080001687A1 (en) * | 2004-11-18 | 2008-01-03 | Abb Patent Gmbh | Electrical Installation Switching Device |
US20080290971A1 (en) * | 2007-05-23 | 2008-11-27 | Abb Ag | Electrical service switching device |
US20110244708A1 (en) * | 2008-12-25 | 2011-10-06 | Tatsuya Hayashi | Terminal block and method of assembling the same |
US8241072B2 (en) | 2008-04-25 | 2012-08-14 | 3M Innovative Properties Company | Push-type connector |
US20150102875A1 (en) * | 2012-04-12 | 2015-04-16 | Razvojni Center Enem Novi Materiali D.O.O. | Switch for protection of electric circuit against overloading |
US20190164710A1 (en) * | 2017-11-29 | 2019-05-30 | Schneider Electric USA, Inc. | Noncontact solenoid for miniature circuit breakers with a movable frame and magnetic coupling |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US3886507A (en) * | 1973-10-05 | 1975-05-27 | Westinghouse Electric Corp | Adjustable latch for a relay |
-
1991
- 1991-12-23 US US07/814,972 patent/US5162765A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3886507A (en) * | 1973-10-05 | 1975-05-27 | Westinghouse Electric Corp | Adjustable latch for a relay |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5444424A (en) * | 1993-10-27 | 1995-08-22 | Square D Company | Circuit breaker trip solenoid having over-travel mechanism |
EP0668602A1 (en) * | 1994-02-16 | 1995-08-23 | Eva Munoz Omella | Adjustable current-limiting release for electrotechnic devices |
US5565828A (en) * | 1994-03-01 | 1996-10-15 | Heinrich Kopp Ag | Circuit breaker |
AU682429B2 (en) * | 1994-03-01 | 1997-10-02 | Heinrich Kopp Ag | Circuit breaker |
AU745223B2 (en) * | 1998-05-07 | 2002-03-14 | Eaton Corporation | Actuator assembly with calibration means and electrical power switch apparatus incorporating the actuator assembly with calibration means |
US5886605A (en) * | 1998-05-07 | 1999-03-23 | Eaton Corporation | Actuator assembly with calibration means and electrical power switch apparatus incorporating the actuator assembly with calibration means |
US6441709B2 (en) * | 1998-07-30 | 2002-08-27 | Siemens Aktiengesellschaft | Device for short-circuit protection |
US6420948B1 (en) * | 1998-10-21 | 2002-07-16 | Airpax Corporation, Inc. | Parallel contact circuit breaker |
US6034586A (en) * | 1998-10-21 | 2000-03-07 | Airpax Corporation, Llc | Parallel contact circuit breaker |
US6262643B1 (en) * | 1999-02-01 | 2001-07-17 | Entrelec S.A. | Mechanism for controlling an electrical circuit breaker |
DE10120677A1 (en) * | 2001-04-27 | 2002-11-14 | Siemens Ag | Modular series switch unit has switching module with holder for coupling element for clamping switch mechanism, contact elements, connection arrangement in form of contact module |
DE10120677B4 (en) * | 2001-04-27 | 2010-11-04 | Siemens Ag | Modular rail-mounted device |
US6853274B2 (en) | 2001-06-20 | 2005-02-08 | Airpax Corporation, Llc | Circuit breaker |
WO2006015030A1 (en) * | 2004-07-27 | 2006-02-09 | Siemens Energy & Automation, Inc. | Enhanced solenoid-armature interface |
US20080001687A1 (en) * | 2004-11-18 | 2008-01-03 | Abb Patent Gmbh | Electrical Installation Switching Device |
US7579933B2 (en) * | 2004-11-18 | 2009-08-25 | Abb Patent Gmbh | Electrical installation switching device |
US20060164195A1 (en) * | 2005-01-25 | 2006-07-27 | Chung Rong-Lin G | Breaker for protecting electric facilities |
US7132911B2 (en) * | 2005-01-25 | 2006-11-07 | Rong-Lin G Chung | Breaker for protecting electric facilities |
FR2897991A1 (en) * | 2006-02-24 | 2007-08-31 | Soule Prot Surtensions Sa | OVERVOLTAGE PROTECTION DEVICE WITH SOLD-FREE CONTACTS AND METHOD FOR MANUFACTURING THE SAME |
US20070217107A1 (en) * | 2006-02-24 | 2007-09-20 | Lagnoux Alain R R | Device for providing protection against overvoltages with solderless contacts and corresponding manufacturing method |
US7821757B2 (en) | 2006-02-24 | 2010-10-26 | Abb France | Device for providing protection against overvoltages with solderless contacts and corresponding manufacturing method |
EP1826794A1 (en) * | 2006-02-24 | 2007-08-29 | ABB France | Device for protecting against overvoltage with solder-free contacts and corresponding manufacturing method |
CN101038805B (en) * | 2006-02-24 | 2011-08-24 | Abb法国公司 | Device for providing protection against overvoltages with solderless contacts and corresponding manufacturing method |
US7839241B2 (en) * | 2007-05-23 | 2010-11-23 | Abb Ag | Electrical service switching device |
US20080290971A1 (en) * | 2007-05-23 | 2008-11-27 | Abb Ag | Electrical service switching device |
US8241072B2 (en) | 2008-04-25 | 2012-08-14 | 3M Innovative Properties Company | Push-type connector |
US20110244708A1 (en) * | 2008-12-25 | 2011-10-06 | Tatsuya Hayashi | Terminal block and method of assembling the same |
US8210865B2 (en) * | 2008-12-25 | 2012-07-03 | 3M Innovative Properties Company | Terminal block and method of assembling the same |
US20120238156A1 (en) * | 2008-12-25 | 2012-09-20 | 3M Innovative Properties Company | Terminal block and method for assembling the same |
US20150102875A1 (en) * | 2012-04-12 | 2015-04-16 | Razvojni Center Enem Novi Materiali D.O.O. | Switch for protection of electric circuit against overloading |
US9275816B2 (en) * | 2012-04-12 | 2016-03-01 | Ravojni Center Enem Novi Materiali D.O.O. | Switch for protection of electric circuit against overloading |
US20190164710A1 (en) * | 2017-11-29 | 2019-05-30 | Schneider Electric USA, Inc. | Noncontact solenoid for miniature circuit breakers with a movable frame and magnetic coupling |
US10535484B2 (en) * | 2017-11-29 | 2020-01-14 | Schneider Electric USA, Inc. | Noncontact solenoid for miniature circuit breakers with a movable frame and magnetic coupling |
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